Single-acting pump



'(No Model.)

'M. O. HARRISON.

SINGLE ACTING PUMP.

No. 583,746. Patented June 1,1897.

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UNITED. STATES PATENT OFFICE.

MOSES C. HARRISON, OF PITTSBURG, PENNSYLVANIA.

SINGLE-ACTING PUMP.

SPECIFICATION forming part of Letters PatentNo. 583,746, dated June 1,1897.

Application filed April 18 1896. $erial No. 588,132. (No model.)

T at whom it may concern.-

Be it known that I, MosEs O. HARRISON, a citizen of the United States,residing at Pittsburg, in the county of Allegheny and State ofPen11sylvania,have invented or discovered a new and useful Improvementin Single-Acting Pumps, of which the following is a full, clear, andexact description, reference being had to the accompanying drawings,forming part of this application, in which- Figure 1 is a perspectiyeview of a pump constructed according to my invention. Figs. 2 and 3 aredetail detached views in perspective illustrating the construction ofthe top of the piston-rod. Fig. 4 is an enlarged vertical sectional viewof the bottom of the pump, showing the valve-chamber, cylinder, andpiston. Fig. 5 is an enlarged vertical sectional view of the valve andseat, showing it in a raised position. Fig. 6 is a cross-sectional viewon the line VI VI of Fig. 5. Figs. 7, 8, and 9 are detail viewsillustrating the releasevalve.

Similar numerals of reference refer to like parts wherever usedthroughout this specification.

Myinvention relates to the class of singleacting hand-pumps for wells ofmedium and considerable depth and refers to an improved form ofrelease-valve.

Referring to the drawings, 2 is the main vertical portion of the pumpfitted with the usual lever 3, to which is attached the customarypiston-rod 4, terminating in the piston 5, working in the short cylinderor working barrel 6. As is customary, the piston 5 is made to allow offree passage of water on the downstroke. Secured to the bottom of theworking barrel 6 is the valve-seat 7, projecting downwardly from whichis a section of pipe 8, which mayvary in length to suit the depth ofwell. The valve consists of a leather face 9, secured between an uppercircular plate 10, provided with an open ring 11, and adownwardly-extending tapering longitudinal tail portion 12, havinglateral wings 12, into the upper end of which projects a teat 13, heldin place by a screw 14, and in this manner the leather seat is thussecurely held between the upper plate 10 and the upper portion of thelower part 12. When in operation, this valve will rise under action ofthe piston 5 into the position shown in Fig. 5, allowing the water topass up around it, the tailpiece 12 serving to keep it in a verticalposition and causing the Valve by its weight to quickly reseat itself.The piston-rod 4 is provided at its upper end with a hook 15, as shown,either with a downwardly-turned end, as in Figs. 1 and 2, or plain, asin Fig. 3. When for any reason it is desired to withdraw the valve fromthe pump, this rod is withdrawn, reversed, and inserted top down in thepump,when the valve may be readily withdrawn by engaging the ring 11with the hook 15. This will be found to be a valuable feature,especially when it is desired to renew the leather seat of the valve.

The release-valve for draining Water above the frost line of the pump(illustrated in Figs. 1, '7, 8, and 9) consists of a wedge-shaped valve15, provided with a leather face 16, designed to bear tightly againstthe face of the opening 17, leading into the interior of the pump andforming a part of the correspondingly-wedge-shaped socket within whichthe valve 15 plays.

The valve is connected by a nipple with a rod 18, extending up throughthe pedestal of the pump to Within easy reach of the operat-or, beingsecured in position by friction of the leather face 16. By raising orlowering this rod the valve may be opened or closed, as will be readilyseen, due to'the Wedge shape of the valve forcing it against the seatand releasing it therefrom, according to the position it occupies.

The advantages of my invention will be appreciated by those skilled inthe art, asthe features of improvement are valuable and practicable, andhave been demonstrated in practice to produce the most satisfactoryresults.

Changes and modifications may be made in its construction by the skilledmechanic without departing from my invention, and I desire to includeany and all such variations in its scope.

Having described myinvention and in what manner it operates, what Iclaim, and desire to secure by Letters Patent, is-

In a pump, the combination with an integral release-valve socketprovided with internal oppositely-located, fiat vertical and concaveinclined faces respectively, andathreadand projecting upwardly, providedwith a IO ed stem having an internal opening leading handle,substantially as set forth.

through the stem to the fiat vertical face; of In testimony whereof Ihave hereunto set the Valve 15 provided With an inclined conmy hand this9th day of March, 1896.

5 Vex back adapted to bear against the concave face and a flat leatherseat 16 adapted to seat MOSES HARRISON itself upon and be wedged againstthe perfo- Witnesses: rated flat vertical face by upward motion, PETERJ. EDWARDS, With a rod 18 secured to the top of the valve M. CLARKE.

